Encyclopedia of Impossible Things

They await discovery: Items of power, both legendary and forgotten, forged by the same mythology and fiction that spawned the recursions in which they lie. What would you do with a lich's phylactery, the ring of Odin, a vorpal sword, the spell book of Thoth, or the picture of Dorian Gray? What would Earth's enemies do with these powerful, mythic items if they were brought into our world?